The Premier 50 Ton 4-Bolt Mounting Slack Reducing Coupling Kit is the perfect solution for heavy duty towing. This kit is designed to provide maximum stability and safety when connecting a towing vehicle and trailer. The 4-bolt mounting system ensures a secure connection to the towing vehicle, while the air lock system ensures a tight and secure fit. With a maximum vehicle load capacity of 20,000 lbs, this kit is perfect for even the most demanding towing jobs. The kit also includes a slack reducing coupling that helps reduce wear and tear on the towing vehicle and trailer. FleetPride is your First Click in Heavy Duty®.